Buffing device



W. L. GOODSTElN BUFFING DEVICE Filed July 51, 1926 INVEN TOR;

ATTORNEY Patented Oct. 11 1927. I

UNITED STA ammo DEVICE.

WILLIAM I. GOODBTEIN, OF'YONKERS, NEW YORK.

Application and m a1, 1920; semi so. mm.

This invention relates to polishing or bufiing devices and more articularly to those of the hest grade,'a apted for manipulation on at surfaces as directed and con- 6 trolled by an operator, with special reference tothe bodies of vehicles.

Itisa matter of common knowled e that the constantly increasing number automobiles :and like pleasure vehicles has created a demandfor means adapted to put a high polish on the ainted or lacquered body and wheels of suc vehicles and also facilitating cleaning the same from accumulations of dust, mud and the like, such cleansing opera- 15 tions being onerous and extremely tedious, beside involving the expenditure of valuable time and the exercise of great care to avoid scratching or otherwise marrin the initial finely finlshed surface in removmg undesirable accretions. With this device a vehicle of any size can be cleaned and pohshed in a small fraction of the time required for the manual performance of the same work.

Not only is there great danger of abrading 25 the surface but also of causing discolorations due to heat engendered by friction of the polishing means employed.

It is therefore an object of this invention to rovide a polishing device so arranged as to he substantially incapable of defacing the surfaceon which it is operated by scratching, no rough or hard portions of the'bulf projecting to contact with the work surface.

A further feature is in the provision of means adapted to absorb any heat generated by frictional contact and dissipate the same in the atmosphere.

As is obvious this device can also be used to great advantage as a mechanical sander' on painted or lacquered surfaces between the ap lication of successive coats and with any suitable abrasive either in paste or liquid fo Tmther advantage resides in the interposition between the bufling element and its backin of a soft resilient cushion adapted to eve ly distribute the pressure applied in a uniform even manner.

These and other practical and valuable features, which will become obvious as the description progresses, are accomplished by the novel selection, construction and arrangement of parts as hereinafter described and shown in the accompanying drawing, formin a material part of this disclosure and in w ich the figure is a-partial side elevational,

gartial transverse sectional view of a bufling ead made in accordance with the invention.

In the drawing the numeral designates the front portion of an arbor or drive spindle, the same being actuated in any convenient manner-from a power unit, as a flexible shaft or the like, not shown, and rovided with a handle, also omitted, by w ich th'edimplement may be efliciently manipuvre Fixed on the spindle 5 is a collar 6, the lnner extending end 7 of the spindle-being screw-threaded and provided with a nut 8 and washer 9. 4

The arbor 7 passes through an axial opening in a circular backing plate 10 which may be metal but preferably is a series of rubber plates interposed with layers of canvas orlike reenforcing material to provide a suitable degree ofstiffness.

Adjacent the backing plate 10 is a press board or fiber disc 11, the disc and plate being clamped against the collar 6 by the nut'8 to be driven by the arbor.

A circular pad 12 of considerable thickness and of larger diameter than the backing 10 is secured to the disc 11 by a mutually adherent film ofglue 13 or like adhesive, this pad being composed of heat absorbent felt, soft, spongy and elastic, constituting a cushion and having an opening 14 into which the nut 8 extends, the opening being ofv suflicient size to permit the entrance of a wrench in securing the head upon the arbor.

A disc 15, substantially one-third the thickness of the pad 12, of pure soft wool felt 15 is secured to the face of pad 12 by a film of adhesive 16, so applied between these pads as to avoid projecting to the periphery of the wool pad 15' which, as shown, is of slightly smaller diameter than the cushion pad 12 and held firmly concentric upon its face; the outer pad 15 is provided with a relatively small central opening 17 to admit a wrench into the chamber 14 in adjusting the head upon its arbor.

In operation the face of the pad 15 is applied to the'work surface, previously r'elieved of any collection of caked mud, and such pressure applied by an operator as discretion and experience indicate.

The rapidlyrevolving soft face of the pad immediately prod- "es a high glossy polish, reducing the lisp time" for such work very materially and obviously scratching is impossible as any hard substance, even the glue, is prevented from coming in contact,

while the arbor. and its parts are entirely enclosed, and any heat generated is absorbed or carried of by the interstices of the felt.

From the foregoing it'will be seen that a simple device for this urpose has been disclosed in the preferred form of its embodiment, but it'is not desired to restrict the details to the exact construction shown, it being obvious that changes, not involving the exercise of invention may be made without said pad, means to cause adhesion between said elements, and an arbor fixed in said backing to drive the head.

2. A polishing head comprislng a soft wool felt disc, a cushionpad of felt capable of absorbing heat fixed to the back of said disc, said pad exceeding the diameter of the disc and being substantially three times its thicknesaa fiber disc fixed on the back of said pad, a laminated backing for said fiber disc, and means to convey rotary motion to said head, said means being accessible through the outer disc and pad.

3. A polishing head adapted for manual operation comprising a power driven arbor, a yieldable backing plate secured on said arbor, said plate being comprised of rubber and canvas sheets arranged in alternate relation, a cushion pad fixed on the face of said plate. said pad having an opening into which said arbor extends, and a facin disc of softer texture fixed on the outer s1de of said pad, said disc being of lesser diameter than the pad, greatly diminished in thick ness and containing an opening through which said arbor is accessible.

In testimony whereof I have hereunto affixed my signature.

WILLIAM L. GOODSTEIN. 

